FIELD: organic synthesis catalysts.
SUBSTANCE: group of invention relates to a method for preparing rare-earth element-based catalyst suitable for alkoxylation processes, in particular, to preparation of liquid catalytic composition based on lanthanum phosphate. Preparation procedure: lanthanum salt soluble in primary monoatomic C9-C30-alkanol at temperature not below 120°C is provided; this salt is added to primary monoatomic C9-C30-alkanol to form lanthanum/alkanoyl solution; resulting solution is supplemented by phosphoric acid at lanthanum salt-to-phosphoric acid molar ratio between 0.7:1 and 1.3:1 to form liquid catalytic composition based on lanthanum phosphate. Described is also a method for preparing alkylene oxide adducts of organics containing active hydrogen.
EFFECT: reduced viscosity of reaction system and accelerated reaction.
7 cl, 4 ex
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